wasm: camera example fails in webgl

Camera example fails in two ways

• it takes a reload to get camera listed in menu and turned on
• webgl shader fails to compile:

camera.js:13983 Failed to compile shader: ERROR: 0:25: '[]' : Index expression must be constant Source was: #version 100 precision highp float; precision highp int; struct buf { mat4 matrix; mat4 colorMatrix; float opacity; float width; float masteringWhite; float maxLum; int redOrAlphaIndex; }; uniform buf ubuf; uniform highp sampler2D plane1Texture; uniform highp sampler2D plane2Texture; varying vec2 texCoord; void main() { float Y = texture2D(plane1Texture, texCoord)[ubuf.redOrAlphaIndex]; vec2 UV = texture2D(plane2Texture, texCoord).xy; vec4 color = vec4(Y, UV.x, UV.y, 1.0); gl_FragData[0] = (ubuf.colorMatrix * color) * ubuf.opacity; gl_FragData[0] = clamp(gl_FragData[0], vec4(0.0), vec4(1.0)); }
 
256
14:36:45.624
WebGL: INVALID_OPERATION: useProgram: program not valid